10“The priest who is chief among his brothers, on whose head the anointing oil is poured and who has been consecrated to wear the garments, shall not let the hair of his head hang loose nor tear his clothes.
The high priest was not allowed to participate in mourning or burial practices. He was prohibited from uncovering his head (letting his hair hang loose). These were cultural signs of mourning for the dead.
10 “The priest who is chief among his brothers, on whose head the anointing oil is poured and who has been consecrated to wear the garments, shall not let the hair of his head hang loose nor tear his clothes.